This volume, Climate Variability, Climate Change, and Fisheries, addresses the potential implications for fisheries and societies of the regional impacts of a global warming of the atmosphere. Fisheries case studies were selected for investigation of the responses to changes in their environment. While most of these changes related to biological factors (that is, changes in the abundance of a fish population), some case studies related to abiotic factors, focusing on changes in the availability of fish (that is, a loss of access to commercially exploited fish stocks because of unilateral extensions by nations of their fishing jurisdictions).